Fireproof window construction.



No. 871,131. PATENTED NOV. 19, 1907. B. H. LUNKEN & O. M. CONKLIN.

FIREPROOF WINDOW CONSTRUCTION.

APPLICATION FILED mmzz, 1907.

UNITE-l) s'rATEs PATENT oFF1eE.

noiiuxn n. Lux' KEN .xxn CHARLES M. eoxn as. or cI XoINxx-VM, on'1o,- AssmNous, BY

DIRECT AND MESXE ASSIGXMENIS, l() THE LUXKEN STEEL \iilN-DOW 00., A CORPORA- TION or cure.

FIREPROOF wriwnow CONSTRUCTION.

. Pa.tented Nov. 19,1907.

Application tiled March 2251907. I Sria1lqo. 363.8l7.

- all whom. it may concern:

- Be it. known thatwe, Enu tx-n II. ldfNKEN and CHARLES M; Commas, citizens of the United States, residing at Cincinnati,-()hio liavefinver'ited certain new and useful improvements. "in Fireproof Window Consaturation, of which the following is a specification. z e Our present invention relates to improvements in a fire proof window sash. 'lhese irn irovenients are applicable in the main. to. eit er sliding "or swinging sashes, although in the presentdrawing they are shownas embodied in a sliding sash glesigne'd'with particular reference 'for use in connection with;

fire proof windows, such as shown and de-- scribed, for example, mum applicationfiled by Nov. 22/06, -fif-f54 t643, although of course-not limitedto use n connection with such window frames.

' "Among the objects of the invention'are to provide an improved construction of s'ash which will be yery compact. will be strong and rigid, especially at t 'iecorn'ersywill pre-. sent an extremely neat and finishedappean.

ance, andwill permit of the ready insertion and removal of the glass. I

With these and other objects in Vl0'\\{; t he ,-inv-ention includes the arious features ofconstruction and arrangement andcorrjibinzk;

' tior'i of'par-ts hereinafter described and partic'ularly set forth in the appended. claims;

An embodiment. of the invention" is' illusmadman accompanying drawings, -in y'vhichze p Figure l is a sectional elevation of both the upper and lower sash, thejcentral portion of ea ch being broken away. FigfZis a front elevation of the lower sash. Fig. 3 is a par't horizontal section on line 3- 3 of Fig.2.? Fig.

4 is'a sectional View ofa modification.

"of comparatively thin sheet steel plates. We

therefore. construct our improve'dsash of such thin sheet metal plates or bars. having alnitting edges welded to-forn'i an 'integral or'a hmnogencous rectangular frame": Theel flanges or webs of the (wet the packing strips for t sideniembers. W e. construct and locate the sash so that the plane )aralle l bars constitut-e the meeting rails, these plane'bars p'ern ittingremoval of the glass frames in the n'ia'nner' 'hereinafter more fully described; The channel iron bars or members 5 which constitute the sidesand closed end joif'thej sash are of substantially broad I- beam shape, but with the central-web 5 located nearer to one side so that the flanges 5 and 5' are of unequal widtln .In the outer channel 6 formed by-the flanges 5- and-oneach side of the saslu'we locate. a removable guide strip '7, 'which "is .preferably-covere d by a spring plateol' non-J. corros ve H'littlfSMIQli asbrass, as indicatedv at 7?; the inner ends of which are curved inl ward and bear against the web. 5, thereby serving to press the guide stripsoutward into engagement with the guide grooves of the windowfrrimel .These guide strips may be held intany suitable manner, and as their particular construction,sand 'the bOSt IiULII- ner 'of jholding 'theni removab'ly in place forms the subject offiseparate applications filed byu-s, "further illustration or (lescription therc'of'he'rein deemed u'nnecessary.

The channel (B -in the end channel rail or-- member is provided with a spring packing stripjg which is designed toengage crembracc a bar or rail 9 carried by the window frame at the t op'or bottom, 'asthe case may be to form a tightjoint when the windowj's closed. The side and end channel. nieinbers are niiteredarherc they-abut, as shown. at- 10 and welded together to forin a solid,. strong integral connection. At the opposite end of theisash the inside edges of the side channel gineinbers -are "c(mnecteld bythe parallel plates l1 the ends of the plates being welded to'-the'inside edges of the side.melnbersto form integral joinlssimilar to the joints 10 before. described. The space between these parallel'pla es l1 pcrniits'theglass to he slid longitudinally intoplaeei witl-Lil'sedgc. .ated in the interior g ooves formed by the-flanges of the channel members, it being spaced therefrom by any suitable packingniedium,

as indicated at 12. After the glass has been in erl d 'lhe space or opening b tween the plates 11. is closed by the renmvable channel bars 153 which are secured in place by the bolts 14. These san-ie bolts, )referably conllc meeting rail which are shown at 15, but as these form the subject matter of a separate application, a more specific description thereof isdeemed unnecessary herein.

Where it is desired to use two or more nels of equal depth.

While we prefer to use a channel iron of the shape shown in Figs. 1 and 3, in some instances it might be found desirable to use a construction such as shown inFig. 4, in which each bar or member will be made up of two Ushaped channel irons 5 and 5 with theircentr'al webs secured together by rivets, as indicated at 5 Having thus described our what we claim is:

1. A metal sash having three of its sides composed of metal channel bars and its other side ol plane parallel bars extendin; between the webs ofth'e channel bars, all of invention,

said bars having their meeting edges welded together, substantially as described.

2. A sash frame having its sides and one end composed of double chagmeled bars or members, parallel plane members connecting theflanges or webs of said side bars at the other end, and a ren'iovahle bar between said plane parallel members, substantially as ,describe:

3. A metal sash having its sides and one end composedpf double channel bars or members welded together at the corners, parallel plane members connecting the flanges or webs of said side members at the other end and welded thereto, and a bar removably held between said plane members, substantially as described.

In testimony whereof, we aflix our signatures in presence of two witnesses] EDMUND H. LUNKEN. CHARLES M. CONKLIN, 

